D&H operating practices in 1970's and 80's

I have some questions about the D&H in the late 70's and early 80's. Did cabooses and engines change with the crews at Rouses Point? Were freight for Plattsburgh dropped off from passing freights, or did tranfers run to deliver? Did cabooses have to change with the crews? I am working on setting up operating sessions on my D&H layout from Plattsburgh to Rouses Point in the late 70's and early 80's.